Glass.Ceramic heating, Movie Library – Halogen Point Heater Heating, melting and vitrification of rocks series 30 – Amethyst Wednesday July 26th, 2017 HEAT-TECH info This video is a heating, melting and vitrification of Amethyst by the Halogen Point Heater. Please check the following site for more information. Related page: Heating, melting and vitrification of rocks series 4 – Turbidite Heating, melting and vitrification of rocks series 6 – Pink-Granite Heating, melting and vitrification of rocks series 13 – Brick Heating, melting and vitrification of rocks series 23 – Sandstones Heating, melting and vitrification of rocks series 29 – Blue Aragonite Green glass coating-2 Heating, melting and vitrification of rocks series 33 – Biotite Heating, melting and vitrification of rocks series 39 – Amphibole (Hornblede)